- #1
Rijad Hadzic
- 321
- 20
Homework Statement
https://imgur.com/gallery/vCOZq
Its question 26, and the figure can be seen at figure 30.26
Derive and expression for the magnetic field produced at point P due to the current carrying wire shown in figure 30.26. The curved parts of the wire are pieces of concentric circles. Point P is at the center.
Homework Equations
[itex] b = \mu IR^2 / (2)(R^2 +y^2)^{3/2} [/itex]
The Attempt at a Solution
Ok so in the above eq setting y = 0, I get
[itex] b = - (\Theta /2pi) * ( \mu I /2R_1 )[/itex]
(\Theta /2pi) because we are only looking at a portion (\Theta /2pi) of a circle.
for the wire closest to the point P.
I say the magnetic field is going INSIDE the page at point p, which means -z axis, but my book is telling me the field is out of the page.
Is my book wrong here? I don't see how, using the simple right hand rule, the field could possibly be pointing out of the page.